Device for introducing fluids into the cylinders of internal-combustion motors



Apnl 7, 1925. 1,532,820

' D. M K. HEPBURN DEVICE FOR INTRODUCING FLUIDS INTO THE CYLINDERS OFINTERNAL COMBUSTION MOTORS Filed Dec. 12, 1921 BY M ATTORNEYS.

Patented Apr. 7, 1925.

warren stares DONALD MCK I HT rrnrasuen, or ri-rrtannrrrria,iE-NNSYLVANIA.

DEVICE FOR INTRODUCING FLUIDS IINTG THE CYLINDERS 0F INTERNAL-C0IBUSTIONIVIOTORS.-

Application filed December 12, 1921. Serial 110.6%,899.

To aZZ whom it may concern:

Be it known that .I,1DoNAn-D MoKNIeri Hnrerrnu, a citizen of the UnitedStates, and a resident of Philadelphia, in the county of PhiladelphiaandState of Pennsylvania, have invented certain new and useful Improvementsin Devices for Introducing Fluids into the Cylinders ofInterrial-Combustion Motors, whereof tl e following is a specification,reference being had to the accompanying drawings.

My invention relates generally to devices useful in introducing fluidsinto internal combustion motors and more especially in injectingpreparations in liquid form for removing carbon from within thecylinders.

As is well known, such fluids are most effective when introduced whilethe cylinders are still hot; but on account of the high volatilitycharacteristic of these fluids, it has been heretofore a matter ofdifiiculty in introducing them without waste and without danger ofinjury through forcible rejection or expulsiog from the cylinders underback pressure generated in the course of rapid vaporization.

The para-mount object of my invention is to make the introduction ofsuch liquids possible without the difiiculties and danger above pointedout.

How this desideratum may be obtained will become readily apparent fromthe detailed description of one or more typical embodiments of myinvention which follows:

In the drawings, Fig. I, is an elevation of an injecting device of myinvention in a very simple form and showing the manner in which it isused in injecting fluid into the cylinder of an internal combustionengine through a priming cock.

Fig. II, is a view similar to Fig. I, a though somewhat morefragmentary, of a modified form of my invention in which I have shown aspecial means whereby the injecting device may be detachably secured tothe priming cock.

Fig. III, is an elevation, directed more especially to the showing ofthe means aforesaid, as viewed from the right of Fig. II, and V Fig. IV,is a detail cross section taken along the plane indicated at IVIV inFigs. II, and III.

Referring first to the embodiment of my improved injecting deviceillustrated in I, it will be observed to be in the form of a syringe 1which is preferably of a type wherein the, fluid is expelled from acylinder or barrel 2, through the instiaunentali-ty of a piston (notshown) a-ctuatable by it handle 3. The nozzle 1 of the syringe hassecured to it about its end, a tapered tip 5 of a suitable. resilientmaterial, preferably rubber, which may, for convenience of nomenclaturebe termed a stopper gasket. Said gasketis en 'aged bet-ween flanges 6and 7, of the nozzle 4 so as to be held against relative displacementwhen compressed into fluidtightness for sea-ting either within the mouthof the priming cock 8 of the motor cylinder of which a portion is shownat 9 in Fig. 1, or in any suitable opening provided for this purpose.Such fluid tightness may be readily maintained during injection simplyby exerting slight downward pressure upon the syringe in the grasp ofone hand while the other hand is employed in actuating the handle 3. Asa precaution against possible accidental splashing or rejection of theliquid through back pressure created during rapid vaporization of theliquid in the course of injection, I have provided a guard 10, whichsurrounds and overhangs the lip about the mouth of the priming cup andwhich in the present instance is formedas an integral part of thestopper gasket 5.

In use, the syringe is first applied to the priming cock and firmly heldin the manner already explained. The cock is next opened and the chargeof the scavenging fluid injected by moving the actuating handle 3downward. After the desired amounthas been introduced into the cylinder,the syringe is held in place until the cock 8 is closed. A suiiicienttime period is then allowed to elapse for dissolving or disintegratingthe carbon deposits, which, after the motor is started are ejected withthe eX- haust.

The modification shown in Figs. II, III, and IV, is similar to the firstdescribed form except for the. addition of means whereby the syringe maybe detachably secured to the priming cock so that both hands may beentirely free for actuating the syringe during the operation ofinjecting. This means is in the form of a toggle mechanism comprisinglinks 15, 15, pivoted at diaissasze 1 ren metrically opposite points toa metallic cappiece 16 wherein the stopper gasket 17 is housed, and abale 18 which is fulcrumed to the lower ends of: said links and providedwith toggle extensions 19, 19, in turn pivoted at 2020 to a bifurcatedattaching member 21, adapted to engage behind or beneath the cup or head22, of the priming cock. A handle extension 28, of the member 20,facilitates engaging of the latter with a cup in the course of attachingthe nozzle. A cursory examination of Fig. 11, will show that the togglemechanism is effective in compressing the stopper gasket to therequisite extent in effecting and maintaining a fluid tight seal duringinjection, in addition to firmly holding the syringe in place. Releaseof the toggle mechanism is efi ected by drawing the bale 18 upward untilthe links 15, 15, are swung to the side or" the pivot center 2020, oithe toggles 19-19, opposite to that shown, whereafter the. syringe maybe readily withdrawn.

A further departure of the modified form of my invention over the firstdescribed embodiment will be observed in that the integral protectivesplash guard of the stopper gasket is here omitted and its functiontransferred to the extended or enlarged portion 2a of the cap piece 16.

alaving thus described my invention, I claim:'

The combination with a nozzle syringes of a resilient tapered tipadapted to seat against the mouth of a primin cup of an engine, acap-piece within which the tip is housed, said cap piece having anexpanded lower part constituting a surrounding splash guard, and toggleclamp mechanisms associated with the cap piece whereby said tip may bedetachahly secured to the priming cup with the resilient tip compressedto maintain a fluid tight seal,

In testimony whereof, I have hereunto signed my name, at Philadelphia,Pennsylvania, this 6th day of December, 1921.

DONALD MGKNIGHT HEPBURN.

Witnesses 7 JAMES H. BELL, E. L. FULLERTON.

for

